The classification of hearing loss and its influence on language function

Hearing loss is the number of decibels that the hearing threshold of the human ear at a certain frequency is higher than the normal hearing threshold.The more severe the hearing loss, the more obvious the language barrier.

Hearing loss can be caused by the blocking of mechanically conducted sounds such as the outer ear and middle ear (conductiveHearing loss), or due to damage to the inner ear, auditory nerve, and auditory center (sensory neurological hearing loss).

According to the International Standard of the World Health Organization (1997), the hearing threshold of 500Hz 1KHz 2KHz 4KHz is divided by 4 to calculate the average value, and the average value is divided into five grades.

Hearing loss below 25 decibels,Generally, there is no language barrier and will not affect normal language communication.

The average hearing loss is 26-40 decibels,It is difficult to distinguish small sounds, such as the sound of wind blowing in the woods.Generally speaking, there is no difficulty in listening, but many people will find it difficult to hear in meetings, and it is difficult to hear the smaller voices.If the high frequency drops significantly, this situation is more prominent.If infants and young children have hearing loss in this case, it will affect the development of language and intelligence to varying degrees.

The average hearing loss is 41-60 decibels,It is difficult to hear the voice of normal volume.If it occurs in infants and young children, it can cause delays in language education and affect the language learning of infants and young children.

The average hearing loss is 61-80 decibels,Can only hear some words or simple sentences, and it is difficult to hear loudly speaking.If it occurs in infants and young children, it can cause significant delays in language development and abnormal pronunciation.

The average hearing loss is 70-90 decibels,There is a sense of sound for loud sounds, such as the sound of firecrackers, drums, and thunder. It is more difficult to distinguish voices, and the understanding and communication are severely limited, which can lead to language barriers.

Link:      The classification of hearing loss and its influence on language function

REF: Hearing aids ChinaHearing Aids Supplier Hearing Aids Types
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